\begin{tabular}{l*{4}{c}}
\toprule
            &\multicolumn{1}{c}{\shortstack{Party wins,\\t+1}}&\multicolumn{1}{c}{\shortstack{Party runs,\\t+1}}&\multicolumn{1}{c}{\shortstack{Party qualif.,\\t+1}}&\multicolumn{1}{c}{\shortstack{Orient. nb. other\\ cand., t+1}}\\\cmidrule(lr){2-2}\cmidrule(lr){3-3}\cmidrule(lr){4-4}\cmidrule(lr){5-5}
            &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}\\
\midrule
RD\_Estimate &       0.016&       0.006&       0.060&       0.119\\
            &     (0.013)&     (0.021)&     (0.027)&     (0.059)\\
\midrule
Robust p-value&       0.240&       0.533&       0.096&       0.061\\
Observations&        6130&        6130&        5532&        5685\\
Polynomial order&           1&           1&           1&           1\\
Bandwidth   &       0.025&       0.025&       0.025&       0.025\\
Mean, left of threshold&       0.038&       0.831&       0.251&       1.085\\
\bottomrule
\end{tabular}
